var target = { //对象 网页 url
    name: 'poetries'
}

var handler = {
    get: function(target, key) {
        console.log("-------");
        return target[key]
    },
    set: function(target, key, value) {
        console.log('++++++++');
        target[key] = value;
    }
}

// 浏览器
var targetWithLog = new Proxy(target, handler);
console.log(targetWithLog.name);
targetWithLog.name = '卢本伟';
console.log(targetWithLog.name);